Soldering-iron for capping cans



(No Model.)

N. G. NUMsEN, SOLDERING IRON PORGARPING CANS.

Patented Apr. 15, 1890.

lillll INVENTOR;

WITNESSES:

BY CAM /3 Jlmw ATTORNEY.

mum-umm, wumucrmu, n. c.

UNITED STATES PATENT OFFICE.

NATHANIEL G. NUMSEN, OF BALTIMORE, MARYLAND.

SOLDERlNG-IRCN FOR CAPPING CANS.

SPECIFICATION forming part of Letters Patent No. 425,691, dated April 15, 1890.

' Application filed January 27, 1890. Serial No. 338,203. (No model.)

To otZZ whom it may concern.-

Beit known that I, NATHANIEL G. NUMSEN, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Soldering-Irons for Capping Cans, of which the following is a specification.

My invention relates to an improvementin soldering-irons of that class which are provided with a flame-chamber and are heated by a gas-flame located within said chamber. This iron is designed for soldering the caps on fruit and oyster cans and is commonly called a capping-iron.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side View of the iron. Fig. 2 is a vertical longitudinal section of the iron. Fig. 3 is a cross-section of the chamber part of the iron. Fig. 4 is a separate view of the burner. Fig. 5 is a vertical section of the burner.

The cylinder A has the flame-chamber A, and is provided in its walls with outlets b for the escape of the products of combustion. The chamber A at its bottom has an opening a, and thereat around said opening has a ring-face d, which applies the solder about the can-cap. In the present instance the diameter of the bottom-opening is smaller than the diameter of the chamber A. This is produced by a contraction e of the lower part of the walls of the chamber. This particular construction, however, is not important, as the bottom-opening in many irons I make is the same size as the chamber A.

Rigidly attached to the cylinder A is a tube F. This tube at its lower end has an exterior thread g and a nut h thereon within the chamber, and another nut h on the outside serves to clamp the top or crown 'i of the iron and-hold it rigidly on the tube. end of this tube projects down into the flamechamber A. At the upper end of the tube is a suitable branch unison F, to which may be attached a flexible tube leading from a gassupply. At the lower end of the rigid tube F the burner J is attached by' a coupling-collar k. This burner has aclosed or crown-shaped end Z, which is provided with a central screw- The lower threaded opening m and at its circumference with jet or gas apertures 01. The burner is thus within the flame-chamber and is attached to the rigid tube, and therefore the burners position with respect to the walls of the cylinder A is fixed or unchangeable. In other words, the burner does not turn independent of the cylinder. The advantage of this fixed or stationary feature of the burner is that the flames at the small apertures n will play continuously on the same spot or portion of the inner walls of the cylinder instead of playing for a time on one place and then for another period of time onadifferent place, as is the casein those irons where the cylinder is rotated back and forth independent of the burner. This fixed burner therefore heats the iron much better.

A small tube 0 is inside of the main tube, and its lower end on is screwed into the central opening in the crown Zof the burner.

of the branch union F are united by a ringplug'p, and thus an annular passage or space 9 is formed inside of the main tube F and around the small tube 0. The branch at F connects with this annular passage g, and so do the gas-apertures n of the burner. The small tube 0 has both of its ends open. A rod r is loose and free to move in the small tube. Its upper end has a knob r, whereon the hand may press, and its lower end 0' projects below the burner J and is in the center of the opening 0 at the bottom of the iron.

A handle S, of wood or some poor conductor of heat, is rigidly attached to the main tube F below the branch union F.

The construction or means of attaching the maintube F and a cylinder Ato wit, the the two nuts 7th, one within the chamber and the other outside or on top of the cham- The upper end of the small tube and the end berenables the position of the burner J in the chamber to be adjusted vertically. The usefulness of this construction will be understood by the statement that it is important to the attainment of good results in heating that the flames produced by the gas issuing from the small aperture 11 shall impinge on the inner walls of the cylinder at the proper distance above the ring-face d.

In employing this iron to solder caps on top of cans the iron and the burner are both rotated back and forth.

Having described my invention, I claim-- 5 In a soldering-iron for capping cans, the

combination of the cylinder A, having a fianiechamber and the ring-face d, a main tube F, rigidly attached to said cylinder, with its lower end projecting into the flame-chamber, 10 a burner J, stationary in the chamber, having gas-apertures and a closed end provided with 

